| 초록 |
Janus particles are particles with different chemical or physical properties within a single particle phase. In order to prepare a large amount of uniform Janus silica particles, a masking process was adopted, in which only the exposed side of the silica particles immobilized on the solidified wax was selectively modified. Monodisperse silica particles were prepared by a sol-gel process. Pickering emulsion was applied to fix silica particles to the wax particle. The silica particles were arranged at the wax interface by stirring at a low shear rate, followed by stirring at a high shear rate to prepare colloidosomes with a uniform particle size distribution. The hydrophilic silica particles were located at the interface between the wax droplets and water by reducing the negative charge on the surface through the adsorption of the cationic surfactant. The silica particles exposed to the aqueous phase were colored with a fluorescent dye to prepare fluorescent Janus silica particles. |
